fix

Author: srgg

src/nimble/nimble/host/src/ble_gatts.c

@@ -2772,7 +2772,8 @@ ble_gatts_find_dsc(const ble_uuid_t *svc_uuid, const ble_uuid_t *chr_uuid,
             return BLE_HS_ENOENT;
         }
 
-        if (ble_uuid_cmp(cur->ha_uuid, dsc_uuid) == 0 && (dsc_arg == NULL || (dsc_arg != NULL && cur->ha_cb_arg == dsc_arg))) {
+        if (ble_uuid_cmp(cur->ha_uuid, dsc_uuid) == 0 && (dsc_arg == NULL ||
+            (dsc_arg &&  cur->ha_cb_arg && ((struct ble_gatt_dsc_def*)cur->ha_cb_arg)->arg == dsc_arg))) {
             if (out_handle != NULL) {
                 *out_handle = cur->ha_handle_id;
                 return 0;